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#include <ctype.h>
#include <assert.h>
#include <stdlib.h>
#include <string.h>
#include "hashmap.h"
#include "modargs.h"
#include "idxset.h"
#include "sample-util.h"
#include "namereg.h"
#include "sink.h"
#include "source.h"
struct pa_modargs;
struct entry {
char *key, *value;
};
static int add_key_value(struct pa_hashmap *map, char *key, char *value, const char* const* valid_keys) {
struct entry *e;
assert(map && key && value);
if (valid_keys) {
const char*const* v;
for (v = valid_keys; *v; v++)
if (strcmp(*v, key) == 0)
break;
if (!*v) {
free(key);
free(value);
return -1;
}
}
e = malloc(sizeof(struct entry));
assert(e);
e->key = key;
e->value = value;
pa_hashmap_put(map, key, e);
return 0;
}
struct pa_modargs *pa_modargs_new(const char *args, const char* const* valid_keys) {
struct pa_hashmap *map = NULL;
map = pa_hashmap_new(pa_idxset_string_hash_func, pa_idxset_string_compare_func);
assert(map);
if (args) {
enum { WHITESPACE, KEY, VALUE_START, VALUE_SIMPLE, VALUE_DOUBLE_QUOTES, VALUE_TICKS } state;
const char *p, *key, *value;
size_t key_len, value_len;
key = value = NULL;
state = WHITESPACE;
for (p = args; *p; p++) {
switch (state) {
case WHITESPACE:
if (*p == '=')
goto fail;
else if (!isspace(*p)) {
key = p;
state = KEY;
key_len = 1;
}
break;
case KEY:
if (*p == '=')
state = VALUE_START;
else
key_len++;
break;
case VALUE_START:
if (*p == '\'') {
state = VALUE_TICKS;
value = p+1;
value_len = 0;
} else if (*p == '"') {
state = VALUE_DOUBLE_QUOTES;
value = p+1;
value_len = 0;
} else if (isspace(*p)) {
if (add_key_value(map, strndup(key, key_len), strdup(""), valid_keys) < 0)
goto fail;
state = WHITESPACE;
} else {
state = VALUE_SIMPLE;
value = p;
value_len = 1;
}
break;
case VALUE_SIMPLE:
if (isspace(*p)) {
if (add_key_value(map, strndup(key, key_len), strndup(value, value_len), valid_keys) < 0)
goto fail;
state = WHITESPACE;
} else
value_len++;
break;
case VALUE_DOUBLE_QUOTES:
if (*p == '"') {
if (add_key_value(map, strndup(key, key_len), strndup(value, value_len), valid_keys) < 0)
goto fail;
state = WHITESPACE;
} else
value_len++;
break;
case VALUE_TICKS:
if (*p == '\'') {
if (add_key_value(map, strndup(key, key_len), strndup(value, value_len), valid_keys) < 0)
goto fail;
state = WHITESPACE;
} else
value_len++;
break;
}
}
if (state == VALUE_START) {
if (add_key_value(map, strndup(key, key_len), strdup(""), valid_keys) < 0)
goto fail;
} else if (state == VALUE_SIMPLE) {
if (add_key_value(map, strndup(key, key_len), strdup(value), valid_keys) < 0)
goto fail;
} else if (state != WHITESPACE)
goto fail;
}
return (struct pa_modargs*) map;
fail:
if (map)
pa_modargs_free((struct pa_modargs*) map);
return NULL;
}
static void free_func(void *p, void*userdata) {
struct entry *e = p;
assert(e);
free(e->key);
free(e->value);
free(e);
}
void pa_modargs_free(struct pa_modargs*ma) {
struct pa_hashmap *map = (struct pa_hashmap*) ma;
pa_hashmap_free(map, free_func, NULL);
}
const char *pa_modargs_get_value(struct pa_modargs *ma, const char *key, const char *def) {
struct pa_hashmap *map = (struct pa_hashmap*) ma;
struct entry*e;
if (!(e = pa_hashmap_get(map, key)))
return def;
return e->value;
}
int pa_modargs_get_value_u32(struct pa_modargs *ma, const char *key, uint32_t *value) {
const char *v;
char *e;
unsigned long l;
assert(ma && key && value);
if (!(v = pa_modargs_get_value(ma, key, NULL)))
return 0;
if (!*v)
return -1;
l = strtoul(v, &e, 0);
if (*e)
return -1;
*value = (uint32_t) l;
return 0;
}
int pa_modargs_get_sample_spec(struct pa_modargs *ma, struct pa_sample_spec *rss) {
const char *format;
uint32_t channels;
struct pa_sample_spec ss;
assert(ma && rss);
ss = pa_default_sample_spec;
if ((pa_modargs_get_value_u32(ma, "rate", &ss.rate)) < 0)
return -1;
channels = ss.channels;
if ((pa_modargs_get_value_u32(ma, "channels", &channels)) < 0)
return -1;
ss.channels = (uint8_t) channels;
if ((format = pa_modargs_get_value(ma, "format", NULL))) {
if (strcmp(format, "s16le") == 0)
ss.format = PA_SAMPLE_S16LE;
else if (strcmp(format, "s16be") == 0)
ss.format = PA_SAMPLE_S16BE;
else if (strcmp(format, "s16ne") == 0 || strcmp(format, "s16") == 0 || strcmp(format, "16") == 0)
ss.format = PA_SAMPLE_S16NE;
else if (strcmp(format, "u8") == 0 || strcmp(format, "8") == 0)
ss.format = PA_SAMPLE_U8;
else if (strcmp(format, "float32") == 0)
ss.format = PA_SAMPLE_FLOAT32;
else if (strcmp(format, "ulaw") == 0)
ss.format = PA_SAMPLE_ULAW;
else if (strcmp(format, "alaw") == 0)
ss.format = PA_SAMPLE_ALAW;
else
return -1;
}
if (!pa_sample_spec_valid(&ss))
return -1;
*rss = ss;
return 0;
}
int pa_modargs_get_source_index(struct pa_modargs *ma, struct pa_core *c, uint32_t *index) {
const char *t;
assert(ma && index);
if (!(t = pa_modargs_get_value(ma, "source", NULL)))
*index = PA_IDXSET_INVALID;
else {
struct pa_source *source;
if (!(source = pa_namereg_get(c, t, PA_NAMEREG_SOURCE)))
return -1;
*index = source->index;
}
return 0;
}
int pa_modargs_get_sink_index(struct pa_modargs *ma, struct pa_core *c, uint32_t *index) {
const char *t;
assert(ma && index);
if (!(t = pa_modargs_get_value(ma, "sink", NULL)))
*index = PA_IDXSET_INVALID;
else {
struct pa_sink *sink;
if (!(sink = pa_namereg_get(c, t, PA_NAMEREG_SINK)))
return -1;
*index = sink->index;
}
return 0;
}
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